code: def sh(cmd):
      """Run a shell command (blocking until completion)."""
      subprocess.check_call(cmd, shell=True)
  
file_path: auptimizer/src/aup/Proposer/spearmint/helpers.py
imports: import os
  import sys
  import subprocess
  import tempfile
  from google.protobuf import text_format
  from .spearmint_pb2 import *
label_desc: Use image node_id 2 for calling a global function with example usage: sh(cmd) without return types